Shedding mechanism for looms.



A. A. GORDON, JR. SHEDDING MECHANISM FOR LOOMS.

APPLIOATION FILED JUNE 22, 1911.

1,060,977. Patented May 6, 1913.

3 SHEETS-SHEET 1.

QWi/bnmoco I 8mm? muwh QX/tomena A. A. GORDON, JR. SHEDDING MECHANISM FOR LOOMS.

APPLICATION FILED 311N322, 1911.

1,060,977. Patented May 6, 1913.

3 SHEETS-SHEET 2.

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A. A. GORDON, JR. SHEDDING MECHANISM FOR LOOMS.

APPLICATION FILED JUNE 22, 1911. 1,060,977.

Patented May 6, 1913.

3 SHEETS-SHEET 3.

UNITED s'rh'rns PATENT onn'rcn.

v ALBERT A.-GORDO1\T, JR.. OF WORCETER, MASSACHUSETTS, .ASSIGNORTO CR-OMP'ION &

KNOWLES LOOM WORKS, A CORPORATION OF MASSACHUSETTS.

SHEDDING- MECHANISM FOR LOOMS.

Specification of Letters Patent.

1 Patented May a, 1913.

Application filed June 22, 1911 Serial no. 634.735.

other portion of the fabric, to be used on looms in addition to and in connection with the ordinary shedding mechanism.-

The object of my invention is to provide a mechanism of the class referred to of im-- proved construction, to be used on a loom as an auxiliary shedding mechanism.

My improved mechanism is preferably located on the opposite end of the loom from the harness operating mechanism, and is adapted. to operate a certain number of warp threads on the border, or some other part of the fabric, to weave letters, names,

trade-marks, or other designs, into thef fabric, according to apattern indicating card, or chain, of wooden bars pegs, in the usual way.

In my auxiliary shedding mechanism I pivot on the lower part of the harness levers of adobby, of the type shown in Patcut, No. 720,896, jack levers having at their outer ends means to attach harnesses, and

' at their inner ends, on.- the opposite side of their fulcra, surfaces contacting with a stationary abutmenton the frame of the dobby, said abutment comprising preferably a rod supported in one of a series of holes in said frame which holes are arranged radially.

' relat-ive to the pivot of the jack lever. Any

other form of abutment may be used if preferred. The sheds by this construction may be easily varied, by moving said rod out or,

' in relative; to. the pivot point of the jack lever, and by moving one end of the rod farther than the other end, anincline may be made in the shed. By the use-of these jack levers, a harness, for weavinglthe name, can be readily adjusted to accommodate different characters of weave, and different tensions, and also carry all of the, warp threads on the back of the fabric when desired, without in any way changing the more provided withdiificult settingor adjusting of the dobby L itself. I I

My invention consists in certain novel features of construction of my improvements, as will be hereinafter fully described.

I have only shown. in the drawings my improvedmechanism, detached. with sufficient parts of a loom combined therewith,

to enable those skilled in the art to understand the construction and operation thereof.

Referring to the drawings :Figure 1 is a front view of a dobby with my improvements appliedthereto, looking in the direction of arrow (1, Fig. 3. Fig. 2 shows the opposite side. of the parts shown in Fig. 1,-

looking in the direction of arrow 6, Fig.

13, some of the parts shown in Fig. 1 are not shown in this figure, and some parts are shown in section. Flg. 3 1s an outside end the direction of arrow 0, same figure. Fig. 4-shows some of the partsshown at the right in Fig. 1, detached, and in aditferent position, and, Fig. 5 corresponds to 4. but shows the parts shown in Fig. 4 in a different position In the accompanying drawings, 1 is a portion of the loom arch at the front of the loom, 2 is a. portion of-the. loom arch at the rear of the loom. 'The arch 2 has secured thereto a bracket 3, on which is mounted the frame ,4. of the'dobby: only one frame 4 is used in this instance. The 0. posite frame view of the parts shown in Fig. 1, lookingin,

consistsof a bracket 5. see F1g. 2. and the stand 5'. on which are supported the several parts of the dobby mechanism. The harness operating mechanism consists in this inotally mounted thereon, on studs 8 carried on said levers 6, the hubs 9' of the jack levers 9, see Fig. 1. The jack levers 19 extend'towardthe front of the loom, and

have their ends provided with harness cords,

10, which pass through a guide plate 11 on a stand 12, and downwardly through a small 'comber board 13, suitably located over the place where .the border or. edge is to be woven on the fabric.

Extending rearwardly from the hubs 9 of the jack levers 9, is in this instance an arm or projection 9", see Flg. 1, which 1s adapted to bear against an abutment-,m this mstance a transverse stationary bar or rod 11,

located onthe lowe'rpart of a frame 15 secured to the dobby frame 4. The rod 14 can be located in one of a lurality of holes 15' in the lower end of t 1e frame 15, and acts in this instance to increase the throw of the jack levers 9, to form a full sized shed in the warps for the passage of a shuttle. One end of the rod 11 can be placed in one of the holes 15', as the one the farthest from the pivot S on the front frame, and the other end of the rod can be placed in the hole nearest the pivot on the back frame, which will act to increase the throw of the end of the jack levers for the back harness, and that of the jack levers for the front harness, thereby forming a desirable" incline to the warp threads of the shed.

On the upwardly extending projection 6' on the lever B, see Fig. 2, is centrally pivoted the hook lever 16; to the upper and lower ends of each hook lever 16 is pivotally attached the end of a hook 17 and 18, respect-ively, in the ordinary way. The upper hooks 1? are raised, through wires 19 operatedby the dobby fingers 20, and the lower hooks 18 are raised by the dobby fingers 21, to disengage their hook ends from the upper and lower lifter bars 22 and 22', respectively. The fixed abutments engage one end of a hook lever, as its opposite end is moved outwardly by alift-er bar. The hubs of the dobby fingers 20 and 21 are pivotally mounted. on a rod 23, and said fingers extend outwardly above a ,patterncylinder 24, mounted on a shaft25; said cylinder 24: carries in this instance the pattern chain, made up of a series of bars linked together, and carrying pattern pins in the usual way. Only one bar 26 is shown in Fig. 2, with anindicating pin 27 thereon.

The lifter bars 22 and 22', fol-m a frame, with its arms 22". ext-ending out from the hubs 22", which are loosely lnounted on a shaft or rod 29, see Fig. 3.- The outer hub 22 of the lifter bars 22 and 22', has the part 30' extending out there'from,and back to the outer hub 30 on the lever 30, see

Figs. 1 and A stud 31, adjusted inan elongated opening 30. the lever30, see

Fig. 1. has pivotally connected thereto the rod head 32 of a downwardly extending rod or connector 33; through said connector 33 a rocking motion is communicated to the lever 30 from some driven part of the loom, preferably from the bottom 1 shaft, not shown.

' Extending out from the hub 30" is an arm' 30". which is preferably forked at its end,

and has a stud 34, which loosely carries the hub 35' of a downwardly extending pull pawl 35. Thepawl 35 is adapted to engage and operate the ratchet wheel 36-, fast on the shaft 25, to operate and fotate-the-pattern cylinder 24'of the-dobby. The outer end of the stud 3-1 has pivotally mounted thereon the hub 37' of a second pawl or push pawl 37, which is adapted to engage and operate the ratchet wheel 38 on the multiplier cylinder 39, which is loosely mounted on the cylinder shaft 25. The multiplier cylinder 39 is made in this instance in two sections 39', and 39", see Fig. 3, each of which is adapted to carry a patternchain 40. The chain 40 consists of links 10. and in this instance one low link 10'. The rest of the links -10 of the chain 10 are of uniform size and higher than the low link 40'. The

chain 10 is adapted to operate a lever or finger 41, see Fig. 1, which has its hub all, see Fig. 3, loosely mounted on the rod 23. An arm 12 extends upwardly from the hub 41' and has adjustably fastened thereon a bent wire or pin 43, which is adapted to engage a cam shaped projection 35 on the all pawl 35, see Fig. 5. As long as a high l1nk of the chain 10 comes under the finger 41, the pawl 35 will be disengaged from the ratchet wheel 36, and leave the pattern cylinder 3-1 at rest, as shown at Fig. 5. Then a low link 40' comes under the finger -11, the 'wire 43 will disengage the pawl 35 and allow it to operate the pattern cylinder 34.

According to the pattern indication, the push pawl 37 is prevented from operating the multiplier cylinder 39, by a lug or pro-' respective pattern indicating chains.

As long as the lever 4-1 remains in the position shown in'Figs. 1 and 3. the push pawl 37 is held out of engagement with'the ratchet wheel 38 on the multiplier cylinder 39, by the lug or projection 41-1 on the lever 4-1, and as the finger 41 remains upon a low link 40, causes the continuous operating of the pull pawl 35 for the pattern cylinder 24 of the dobby.

' The last chain bar 26 of the pattern chain is provided with an extension or lug 26*. see Figs. 1 and-5, which is adapted to engage and raise t'he engaging end'l-l on the lever -11, and move the lug 4-1 on said lever away engage the ratchet wheel 36. to turn the multipliercylinder 39,,ian'd cause. through from the pawl 37. and cause said pawl 37 to from the ratchet wheel 36. to leave the pattern cylinder 2-l'at rest, until a low link-10' comes again under the finger 11, which. causes the pull pawl'35 to operate the pattern cylinder 24. V

To obtain a long repeat on the multiplier chain while the dobby cylinder remains at' rest, I provide the multiplier cylinder 39 with two separate chains, upon the sections 39 and 39", each of the chains have one low link, and the number of the links in one chain differs by one link from the number of the links in the other chain.

It will be understood that a long repeat is obtained by the differential moving of the chains relative to .each other, until a low link in each chain meets at-the same time, at

the place where the finger 41 is located, to lower said finger 41, and'put into operation the pat-tern cylinder 24 of the dobby.

The operation of my auxiliary shedding mechanism is as follows :The main pattern chain, formed of bars 26, having a design, as a name, indicated by pegs 27 thereon, causes the harness lever 6 to be moved in the usual way by the hooks 17 and 18, moving upward the fulcrum pins 8, which carry with them the hubs 9' on the jack levers 9, the rearwardly projecting ends 9" of said levers, contacting with the fixed rod 14,

' and increasing the movement of the outer passes through. l

end of the jack lever, and raising the harness cords 10, bringing the warp threads into a full sized shed for the passage of an ordinary shuttle in weaving the fabric. By placing the rod 14 in a hole 15', nearer the fulcrum pin 8, for the back lever than for the front one, the shed will be-raised into an inclined position, and the warps will all be in the same plane above the shuttle as it With the dobby operating as above described, the weaving of the fabric with the letters of the name in the border proceeds, until the end of the chain carrying the egs for the name is reached, after which,,i no

, pegs are placed on the succeeding bars of '-ric as it is woven.

the chain, the harness cordsv will not be raised, and the warp threads will all remain down and be carried on the back'of the fab- As it is desirable to continue the weaving of the. fabric a long distance, usually one ;yard, more or less, before the name is re peated, any of the well known chain multipliers n aybe used to accomplish this, alid [the pattern cylinder will then remain at rest. The multiplier chain Iprefer. to 'useis' shown v .in Figs. 4 and 5, and consists of two separate chains of-u-nequallength carried on a ,;hub, and a ratchet'whe'el and'pawl to move them simultaneously, 'each chain havin asingle indication, which may be a low link. ,Thedifierential movements of thechains eve'ntually brings .a low link bn each' chain under thefinger 41,- and lowers said finger 41. and puts. into operation the pattern'cylinder 24 of-the -dobby.' At the termination of the weaving of the name, an indicating peg on the pattern'chain, through an interk mediate lever, causes the pawl to engage the construction of my improvements may be varied if desired.

I do not claim broadly the use of a multiplier chain, in connection with a dobby mechanism, but I believe that I am the first to use in an organized loom, a harness mechanism to form sheds in the warps, and an auxiliary mechanism, comprising a miniature sized dobby for weaving names in the border, having means to form full sized sheds with the name weaving warp threads, and two multiplier chains, to control the pattern mechanism, to leave blank spaces between the names, whereby a maximum amount of work can be produced with a minimum amount of mechanism.

Having thus described my invention, what Iclaim as new and desire to secure by Letters Patent is 1. In shedding mechanism for looms, a series of'harness levers, and jack levers'having their fulcra on said harness levers, harness connections from said jack levers, a

rod or bar to be engaged by the inner ends of the jack levers, and adjustable with reference to the fulcrums of the jack levers, whereby theshed formed by the movement of the jack levers may be increased or diminished.

2. In shedding mechanism for looms, a

series of harness levers, and jack levers having their fulcra between their ends upon "projections on said harness levers, harness connections from said jack levers, a rod or bar having one end n a-fixed position nearer the fulcrum's of saidjack levers than the'[ I other end, whereby when the fulcrums are moved upward to form sheds, the increased movement of the outer end' of a jack' lever -will'be at the endof said rod or bar, which is'nea1;est the fulcrum" of said jack lever.

. 3. In sheddin mechanism for looms,the combination wit a dobby, having harness levers, hook levers, abutments for the ends oftlie hook levers, lifting hooks, and lifter bars, of jack levels for the harnesses, having 1 their fulcra on said harnessilevers, andfla' sta tiona'ry' abutment .to be engaged by the inner end of said'jack levers.

q 4, In shedding mechanism for looms, a

harness lever, a jack lever, having its fule crum on said harness lever,fharness connections from .one end. of said jack lever, a sta- -tion'ary abutment tocontact with the inner end of said jacklever; means to move said harness lever. consisting of a hook lever-cent-rallyC pivoted on a projection on the harness 130, I

lever, lifting hooks, pivoted one at each end of said hook lever, outwardly moving lifter bars for the lifting hooks, and fixed abutments for each end of said hook lever, one of said ahutments to engage one end of said hook lever, as its opposite end is moved outwardly.

5.\ The combination with a shedding 111ech anism for weaving names in the border of fabrics, wlth spaces between the names, and

having harness levers, hook levers, fixed abutments, lifting hooks, and lifter bars, and pattern indicating mechanism, of jack levers for the harnesses, having their fulcra upon the harness levers, and an adjustable abutment, by which the warps may be regulated when weaving bet-ween the names, to carry the warps on the back of the fabric.

"ALBERT A. GORDON, JR. \Vitnesses; l

JOHN C. DEWEY, MIXXA HAAS. 

